The Soundproof Foam Allows You To Have A More Pleasant Sound By Effectively Controlling Unwanted Reverberation And . High Density, Flame Retardant, Good Resilience. Acoustic Foam Panels Can Be Used To Treat Medium And High Frequency Reflections, Reverberation And Standing Waves. They Are Easy To Of And Only Need To Be Taken Care Of By A Vacuum Cleaner Occasionally. perfect For Controlling Sound Reflections In Small Rooms. Foam Tiles Soft Sponge, Dust-Free, High Density. Used To Absorb Frequencies In The Mid-To-High Range And Reduce . For Professional Acoustic Control, Sound Absorption And Reverberation Reduction. By Attenuating The Excess Sound Waves To Obtain A Better Recording Effect. Sound Absorbing Panels Are Suitable For: Recording Studio, Piano Room, Tympanum, Anchor Room, Home Theater, Ktv, Meeting Room, Instrument Room, Etc. Sound Insulation Foam Size: 30 x 30 x5Cm. Quantity:6Pcs. Products Are Compressed To Reduce Transportation And Overall Costs. Please Open The Package And Leave It At Room Temperature For At Least 72 Hours To Restore Its Shape And Size. size: 30x30x5cm Material:Polyurethane colour:Black Package Contents: 6 x Acoustic Foam Panels Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.